Craigb
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Everything posted by Craigb
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Here’s the plate
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The plot thickens. So whoever had the saw before me put the exhaust gasket on first then the shield. Also the piston is in good nick but has two rings. It isn’t oem as the saw came with the original piston and cylinder which were scored, but they had one ring. I’ll take the top cover off to see if I can identify which brand the new cylinder is.
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I’ll pull the exhaust off tomorrow and have a look and I’ll put the compression gauge on a saw I know works great to check it. I’m wanting to cover most things on this thread in an effort to provided an easy to find trouble shooter for anyone rebuilding a 372. Starting from the top down. I’ll put pictures up as I go and hopefully the collective knowledge on 372s can be captured.
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Bad isn’t it.
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75 psi compression. I think the decomp might be knackered.
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Is it wired wrong?
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I’ll shrink wrap it. This is how the saw came to me
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What is the reason you warm the plug?
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Blue indeed.
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Just acquired it. The saw is full of gunk so it looks like it ran with the coil but the serial number got me. That and it not running with petrol down the inlet bypassing the carb.
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So even with petrol dripped in the carb it won’t start. It has spark but the ignition coil is 510 11 57 02 serial number this on paper is the wrong coil. Is the timing screwed and I need a new coil or should this coil work and it is a different problem? Compression is fairly good but I have not tested it with a gauge.
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Gone and done it now. Got a 372. Has anyone swapped the high top for a low top and are flogging the high top bits? Or wanting low top bits and have high top bits?
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Thank you for all the advice and the piston. The 346 ne is running great. I need a new doer uper. Something bigger.
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It’s been sat now for a good 2 hours and not a drip. Only happened when it was running. The pipe to the bar might be slightly blocked or the pump is playing up. There was oil on the bar but not loads. I reckon it might be the pipe to the bar.
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I’ll run it in properly tomorrow. Had it idling for 10 minutes and periodically blipped the throttle for a few seconds. I thought it might have been the metal cover that wasn’t putting enough pressure on the two sides of the pipe work that sandwiches the oil pump end. Where exactly would I put the o ring or the liquid gasket?
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With a bit of carb adjustment the 346 runs great. Not cutting anything because I want the new ring and piston to bed in. However it is leaking bar oil like a sieve.
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curiosity. Don’t worry I’m not a firewood snob.
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Willow in the background. All the timber in the forefront is the same stuff though. It didn’t have the typical birch style bark but obviously brown like most of the cherry trees I’ve seen.
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I was given a load of limbs and sections of trunk for firewood. But what tree did it come from? American holly was my thought. Light weight timber.
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eould that make it around 1000psi?
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Under the spark plug must be ridiculous at wot. Completely useless information but still interesting. Someone must know. I’ll ask Jeeves.
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This test got me wondering. What sort of pressure and vac are developed during use in the crank case? Must be less that the usual 10psi test surely.
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no bubbles whatsoever on the pressure and no drop on the vac test.
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Leak test on 346 rebuild went well.
